Classical open systems with balanced gain and loss, i.e. parity-time ( \mathcal{PT} \mathcal{PT} ) symmetric systems, have attracted tremendous attention over the past decade. Their exotic properties arise from exceptional point (EP) degeneracies of non-Hermitian Hamiltonians that govern their...
Parity-time symmetrynonlinear optical couplernon-Hermitian Hamiltonian with real spectraThis work analyses the propagation of soliton beam in parityCtime () symmetric nonlinear coupled systems with varying loss/gain profiles. When the loss/gain coefficient is a constant, the phase transition takes place...
Periodic driving of PT-symmetric systems breaks time translational symmetry and allows for enriched phase transitions42,43,44,45. For example, periodic modulation of the non-Hermiticity parameter was introduced in a two-level Rabi model, leading to a broken PT-symmetry phase at arbitrary levels of...
Linear and Nonlinear PT-symmetric Oligomers: A Dynamical Systems Analysis oligomers, respecting the parity-time (PT) symmetry, i.e., with a spatially odd gain-loss profile. We examine different types of solutions of such configurations with linear and nonlinear gain/loss profiles. Solutions beyond...
parity‐time symmetryAs an elementary processor of neural networks, a neuron performs exotic dynamic functions, such as bifurcation, repetitive firing, and oscillation quenching. To achieve ultrafast neuromorphic signal processing, the realization of photonic equivalents to neuronal dynamic functions has ...
involving tailored nano-structured devices with controlled optical gain and loss. In this work, anti-parity-time symmetric phase transitions and exceptional point singularities are demonstrated in a single strand of single-mode telecommunication fibre, using a setup consisting of off-the-shelf components...
In "odd parity" systems, the opposite occurs; a 0 parity bit if odd, a 1 parity bit if even to make the total number odd.Only Good for One-Bit Errors Each time a byte is transferred, the parity bit is checked. One-bit parity systems will detect if one of the eight bits in the...
Here, a general instability issue of parity-time-symmetric systems is investigated, with particular emphasis on a recently proposed system based on resistive metasurfaces. Explicit closed-form stability criterion is derived, crosschecked and verified by both time-domain transient simulations and the ...
The code words are transmitted to a noisy memoryless binary symmetric channel, where each transmitted bit, xi, may be flipped over and be received as yi, according to the following rule: P(y=0|x=1)=p,P(y=1|x=1)=1−p,P(y=1|x=0)=p,P(y=0|x=0)=1−p. Upon reception ...
Dynamically encircling an exceptional point (EP) in parity-time (PT) symmetric waveguide systems exhibits interesting chiral dynamics that can be applied to asymmetric mode switching for symmetric and anti-symmetric modes. The counterpart symmetry-broken